If you've ever seen a teenager with their face buried in their smartphone and their thumbs typing away as if the rest of the world didn't exist, here's a statistic that won't seem too surprising: 94 percent of teens use Facebook.

It seems when teenagers aren't texting away, they're socializing largely on social networks like Facebook and Twitter. According to a new report from the Pew Internet & American Life Project (along with Harvard’s Berkman Center), 95 percent of teens ages 12-17 use the Internet, and 81 percent of them use social networks.

As of 2012, about 94 percent of teens who use social networks have a Facebook profile, and their average number of Facebook friends is about 425.

Twitter and Instagram are the second and third most used social networks, with 26 percent and 11 percent of teenage users respectively.

While Twitter is far behind Facebook, it has made great progress. In 2011, only 12 percent of teens used Twitter. That number bumped up to 26 percent in 2012.

No data was available for the percentage of teen Instagram users for 2011, but it managed to jump ahead of many other social networks that have been around longer.

Fourth place went to MySpace with 7 percent of teen users in 2012 (down from 24 percent in 2011), YouTube in fifth place with 7 percent of teen users (up from 6 percent in 2011), Tumblr in sixth place with 5 percent of teen users (up from 2 percent in 2011) and Google Plus in seventh place with 3 percent of teen users.

Those at the bottom of the list include Yahoo, myYearbook, Pinterest, Gmail, and Meet Me.

Facebook's popularity shows in its earnings. For Q1 2013, Facebook earned $219 million (9 cents a share) in profit compared to $205 million in the year-ago period. Excluding certain items, the company earned 12 cents a share.

Facebook's revenue for the first quarter was $1.46 billion, up from $1.06 billion in Q1 2012. This was partially due to advertising revenue, which was up 43 percent in the first quarter from Q1 2012.

Despite Facebook's wild popularity, it doesn't look like the world is ready for a Facebook phone quite yet. The HTC First smartphone was released with Facebook Home, a launcher that integrates Facebook's social tools into the home screen of the phone. However, the First was a huge flop and has put HTC in a bad spot financially.

95% of teens use the internet. 81% of internet using teens use social networking. 94% of them "have a face book page."

.95 * .81 * .94 * .7233

So, about 72% of teenagers have a facebook page.

I "have a facebook page" but I don't consider myself a facebook user (I have logged in 4 times in the last 3 years and only log in when I get invites to functions from my sister since she is annoying and uses face book for invites.)

I would think a percentage of this 72% most likely don't use it regularly?